+

WO1999044365A1 - Procede et appareil pour ameliorer l'embrouillage d'un signal tv via des signaux de retablissement de niveau errones - Google Patents

Procede et appareil pour ameliorer l'embrouillage d'un signal tv via des signaux de retablissement de niveau errones Download PDF

Info

Publication number
WO1999044365A1
WO1999044365A1 PCT/US1999/001143 US9901143W WO9944365A1 WO 1999044365 A1 WO1999044365 A1 WO 1999044365A1 US 9901143 W US9901143 W US 9901143W WO 9944365 A1 WO9944365 A1 WO 9944365A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
color burst
signals
sync
video
Prior art date
Application number
PCT/US1999/001143
Other languages
English (en)
Inventor
Ronald Quan
Original Assignee
Macrovision Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Macrovision Corporation filed Critical Macrovision Corporation
Priority to AU22376/99A priority Critical patent/AU2237699A/en
Priority to BR9908254-3A priority patent/BR9908254A/pt
Publication of WO1999044365A1 publication Critical patent/WO1999044365A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/171—Systems operating in the amplitude domain of the television signal
    • H04N7/1713—Systems operating in the amplitude domain of the television signal by modifying synchronisation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal

Definitions

  • the present invention relates to scrambling television signals transmitted over air or via a cable or satellite environment.
  • the invention is most effective as an improvement of
  • An object of this invention is to improve existing concealment systems by using an
  • this erroneous clamp pulse or signal is distinguished
  • a modified color burst signal which may include a narrowed or widened color
  • the TV set's clamp pulse (not a video cassette recorder's (VCR's) automatic gain control
  • the copy protection signal is based
  • an AGC pulse is timed from the trailing edge of sync or pseudo sync and the VCR's AGC sample pulse likewise is timed from the trailing edge of sync.
  • VBI vertical blanking interval
  • a further object of the invention is to disclose a simpler way of inducing more
  • video copy protection is defined as a system wherein a copy protected video signal is viewable with a minimum of or no visible artifacts, but where the playback of a recording of such a signal is not possible or produces a signal that
  • video scrambling is defined as a system wherein a video signal is made unviewable.
  • a scrambled signal may be
  • a primary feature of the present invention includes the technique of adding a pulse or signal, having a level around peak white, during or after the color burst signal, or a
  • the color burst signal preferably has a narrower envelope than normal.
  • the input video signal is
  • the clamp pulse is triggered by the leading edge of
  • the back porch blanking level is approximately 4.7 microseconds after the leading edge of a horizontal sync pulse.
  • the picture level can cause the picture to darken abnormally when the pulse is higher than the normal blanking level, or brighten abnormally when the pulse is lower than the normal blanking
  • a preferred embodiment of the invention includes the narrowing of both
  • clamp pulse are all being position shifted or modulated.
  • the color burst envelope does not need to be shortened, but rather can be of normal or longer length. This is done by including at least a part of the color burst
  • a decoder of the TV set can
  • the decoder's color burst gate pulse can occur after the
  • the present invention can be implemented alone as an effective scrambling system
  • the invention causes darkening (or
  • Yet another alternative feature of this invention includes the generation of a known
  • a decoder's clamping system for example, a dedicated black level interval or a
  • sync tip interval and to incorporate sync/ AGC pulse pair signals as disclosed in the Ryan '603 and/or '810 patents of previous mention, for even more darkening when combined
  • FIG. 1 A is a waveform showing a standard video signal primarily in the horizontal
  • FIG. IB is a waveform illustrating a pulse turned on 4.7 microseconds after the
  • FIG. 2 A is a waveform illustrating an embodiment of the invention where the
  • a color burst portion A is about 4
  • C portions of FIG. 2A include an erroneous clamp pulse (ECP) such as a positive pedestal voltage, with color burst added.
  • ECP erroneous clamp pulse
  • both portions A and B have the correct ECP
  • the portion C can have
  • portion B is about 2 ⁇ s (or
  • portion C preferably varies by modulation.
  • portion C is about 5 ⁇ s duration. Note that the pulse in FIG. IB is
  • FIG. 2B is a waveform illustrating a narrowed clamp pulse for FIG. 2A waveform, for use by a decoder in the descrambler system to correctly clamp the scrambled video to
  • the pulse in FIG. 2B can also be used as the burst gate for the decoder's burst phase loop oscillator.
  • FIG. 2C is a waveform illustrating a burst gate pulse for the decoder that gates
  • FIG. 3 A is a waveform illustrating a post-sync pulse position of the modified horizontal sync pulse and the erroneous clamp pulse (ECP) with color subcarrier in portion B. Note that the sync pulse is now moved toward the beginning of the following active TV
  • FIG. 3B is a waveform illustrating a narrowed clamp pulse of the decoder of a
  • FIG. 3C is a waveform illustrating a burst gate pulse for the decoder for gating the correct burst phase for the FIG. 3 A waveform.
  • FIG. 4A is a waveform illustrating a more effective erroneous clamp pulse (ECP)
  • FIG. 4A also includes a
  • BLVL blanking level location
  • the horizontal sync in FIG. 4A is in the pre-sync position.
  • FIG. 4B is a waveform illustrating a more effective erroneous clamp pulse (ECP)
  • FIG. 4C is a waveform illustrating an alternate location of the decoder's clamp pulse for the waveforms of FIGs. 4 A and 4B.
  • FIG. 5 is a waveform illustrating a double sync scrambled TV signal used optionally
  • FIG. 6, which may or may not include ECP signals.
  • FIG. 6 is a block diagram illustrating an embodiment of the invention for inducing
  • VBI vertical blanking interval
  • FIG. 7 is a block diagram illustrating circuitry of the '815 provisional application for generating a scrambled video program signal using video line position modulation, video
  • the output also may include a vertical sync overlay signal (not shown here).
  • FIG. 8 is a block diagram illustrating an embodiment of the present invention.
  • FIG. 9 is a resultant waveform of the circuit of FIG. 8 for providing modifications
  • the waveform also illustrates that the ECP can be
  • the ECP can also be pulse width or position modulated to create the same type of effect as caused by the amplitude
  • FIG. 7 is a block diagram of the general implementation of the '815 provisional
  • Program (unscrambled) video is supplied on input 178 to
  • timing circuit 180 to generate a horizontal blanking interval (HBI) signal for a switch 188
  • the first level of scrambling is done by a video line
  • Circuit 181 is coupled to an inverter circuit 189 which inverts only the active video portion.
  • the output of circuit 189 is
  • inverted active video that is line position modulated and is supplied to a switch 188 which
  • the new sync is position modulated within the HBI or switched between a number of
  • the sync modulation circuit 185 provides the various sync
  • a color subcarrier is regenerated by a circuit 182 also coupled to the program video input 178, and the subcarrier is gated through an AND gate 183 by a gate signal from a burst gate circuit 186.
  • the circuit 186 triggers off the trailing sync edge of
  • the sync modulation circuit 185 The output of AND gate 183 is supplied to a chroma band pass filter 184. The output of circuit 184 is summed in an adder circuit 187 with the
  • circuit 187 then has new sync (position modulated and the like) and new burst.
  • the amplifier 190 then may be supplied to the circuit of FIG. 8 as an initially scrambled video signal from for example the '815 provisional application.
  • the embodiments of the present invention are particularly useful in enhancing the teachings of the '815 provisional application; that is, to add to the concealment provided by
  • the invention thus add darkening effects that can effectively blank out the TV set. It is
  • a TV set will generate a clamp pulse coincident with the ECP
  • the ECP signal is at least 1 or 2 ⁇ s long.
  • narrowed sync, narrowed burst and ECP signal may all be position modulated or shifted to also induce the horizontal tearing scrambling effect of previous discussion.
  • FIGs. 4 A and 4B when combined with the teachings of the '815
  • FIGs. 4A and 4B depict an alternative
  • the ECP signal occurs immediate after the trailing edge (TE) of sync.
  • the ECP signal should be as long as possible in the pre-sync
  • the ECP can be at least 3 to 5 ⁇ s.
  • the ECP can extend or widen from TE to just the beginning of the
  • BLVL reference blanking level location
  • inventions may be accomplished by replacing or modifying the horizontal blanking interval
  • the methods for modifying the ECP signal can include removal,
  • FIG. 8 then is capable of creating the ECP signals as illustrated in the figures described above, i.e., FIGs. 2A, 3 A 4A, 4B and 9.
  • FIG. 7 is coupled to a sync separator circuit 205 via an input 200. The resulting
  • circuit 205 position modulated sync output of circuit 205 is supplied to a one shot timing circuit 206 which forms a first burst gate.
  • the first burst gate from circuit 206 is timed to the input's
  • phase locked loop (PLL) circuit 213 can regenerate the color subcarrier in
  • the output of the sync separator circuit 205 also is
  • HBI horizontal blanking interval
  • This HBI signal controls a switch 202 which receives the scrambled video via the input
  • the position modulated sync from sync separator 205 is also fed to a one shot timing circuit 209 and a burst gate circuit 208.
  • shot timing circuit 209 sets the delay of the ECP signal relative to the trailing edge of sync
  • a one shot timing circuit 210 sets the duration of the ECP signal.
  • Circuit 209 can
  • an ECP amplitude modulation circuit 214 can also vary the amount of darkening of a picture
  • Varying the darkening effect over time can be a further step.
  • modulation circuit 214 then supplies
  • Regenerated burst such as the A and B portions of FIGs. 2A, 3 A, 4A, 4B and 9 is generated by a second burst gate from a burst gate circuit 208, which gate is supplied to an AND circuit 211 which also receives the continuous wave regenerated subcarrier from the PLL circuit 213.
  • the output of the AND circuit 211 is supplied to a summing chroma filter
  • the burst gate circuit 207 generates a third
  • burst gate forms the burst portion B and the third burst gate forms the burst portion C.
  • the B and C type burst portions are illustrated in FIGs. 2 A A, 4 A, and 9.
  • the B and C type burst portions are illustrated in FIGs. 2 A A, 4 A, and 9.
  • amplifier 203 then contains the scrambled signal of the input 200 plus the new ECP
  • the HBI signal from the timing circuit 204 also is supplied to the ECP amplitude modulation circuit 214 and the
  • chroma filter 212 to keep the ECP and burst signals within the HBI (in the video signal output by the summing amplifier 203.
  • FIG. 6 illustrates a circuit and associated method for providing improved vertical
  • TV lines that then may be used for data, closed caption, test signals and the like. That is, instead of alternating correct and fake vertical sync signals between two or more sets of lines in the vertical blanking interval (VBI) (i.e., lines 1, 2, 3 in even fields and lines 19, 20,
  • flip flop 93 The clock input of flip flop 93 is clocked by vertical or frame rate frequency.
  • the output of the flip flop 93 then allows the insertion of fake vertical pulses during the
  • the output of the flip flop 93 is supplied to an AND gate 94
  • timing signals from a video signal received via an input 91.
  • video signal on input 91 may be unscrambled program video or previously scrambled video.
  • the output of the AND gate 94 then controls insertion of the fake vertical sync signals via
  • FIG. 5 illustrates an example of multiple horizontal syncs in the HBI.
  • a circuit 95 which receives the video signal via the input 91, adds multiple (i.e. double) horizontal syncs in response to the timing circuit 97.
  • a circuit 98 removes the standard vertical sync signals from the respective lines of the input video prior to the insertion of the fake vertical sync signals.
  • the output of circuit 96 may contain horizontal sync, for
  • the color burst signals may be any color burst signals.
  • the color burst signals may be any color burst signals.
  • clock input at flip flop 93 preferably starts either before or after the fake vertical sync pulses (i.e. before line 1 or after line 3). It is also found if the clock
  • the generator 98 is set to
  • the video signal supplied to the circuit of FIG. 8 may be an unscrambled video signal which is to be scrambled in accordance with the present invention. That is, the
  • -14- present invention may be used alone to provide a scrambled video signal which is prohibitively darkened or lightened, which flickers from excessive darkness to lightness and/or which includes an erroneous color "rainbow” effect which also can flicker on and off

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Color Television Systems (AREA)

Abstract

On obtient un signal d'embrouillage de télévision amélioré en ajoutant des impulsions de rétablissement de niveau erronées dans un signal TV, après un éventuel embrouillage du signal, par exemple, au moyen d'impulsions de synchronisation horizontales à modulation de position actuelles. Les systèmes d'embrouillage actuels, tels que ceux qui utilisent des impulsions de synchronisation à modulation de position, provoquent des déchirures dans une image TV affichée sans autorisation. L'ajout d'impulsions de rétablissement de niveau erronées de la présente invention provoque la déchirure, ainsi que l'obscurcissement de l'image. Cet obscurcissement peut complètement éteindre l'affichage sur certains postes TV, masquant ainsi totalement le signal TV. Selon une deuxième réalisation, on obtient un effet 'arc-en-ciel' de couleurs erroné en modifiant une partie d'un signal de salve chrominance, de façon à entraîner le déverrouillage du système de sous-porteuse de chrominance dans un poste TV. Selon une troisième réalisation, on réalise un masque d'embrouillage TV vertical amélioré suivant un procédé qui utilise moins de lignes pour l'insertion d'impulsions de synchronisation verticales fictives dans un intervalle de suppression verticale, et qui déclenche moins d'impulsions verticales fictives pour un mode spécifique défini. Cette amélioration assure un plus grand déplacement vertical permettant un masquage d'image amélioré, tout en proposant des lignes supplémentaires destinées à un autre usage.
PCT/US1999/001143 1998-02-26 1999-01-20 Procede et appareil pour ameliorer l'embrouillage d'un signal tv via des signaux de retablissement de niveau errones WO1999044365A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU22376/99A AU2237699A (en) 1998-02-26 1999-01-20 A method and apparatus for enhancing the scrambling of a tv signal via erroneousclamp signals
BR9908254-3A BR9908254A (pt) 1998-02-26 1999-01-20 Método e aparelho para melhorar a mistura de um sinal de tv via sinais de travamento errÈneo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7608798P 1998-02-26 1998-02-26
US60/076,087 1998-02-26

Publications (1)

Publication Number Publication Date
WO1999044365A1 true WO1999044365A1 (fr) 1999-09-02

Family

ID=22129859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/001143 WO1999044365A1 (fr) 1998-02-26 1999-01-20 Procede et appareil pour ameliorer l'embrouillage d'un signal tv via des signaux de retablissement de niveau errones

Country Status (6)

Country Link
US (1) US6459795B1 (fr)
AR (1) AR018739A1 (fr)
AU (1) AU2237699A (fr)
BR (1) BR9908254A (fr)
TW (1) TW411713B (fr)
WO (1) WO1999044365A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002015557A3 (fr) * 2000-08-15 2002-07-04 Macrovision Corp Procede et appareil permettant d'ameliorer une distorsion chromatique dans un signal video de protection de copie
EP1668900B1 (fr) * 2003-06-05 2013-09-18 DCS Copy Protection Limited Systemes d'interruption de traitement numerique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6711261B1 (en) * 1998-07-22 2004-03-23 Macrovision Corp Enhancing concealment in the presence of fine mistuning for various TV scrambling techniques
US6839433B1 (en) * 1998-07-22 2005-01-04 Macrovision Corporation Method and apparatus for generating a signal that defeats illegal cable decoders
US6836549B1 (en) * 1998-09-02 2004-12-28 Macrovision Corporation Method and apparatus for synthesizing and reducing the effects of video copy protection signals
US20050111661A1 (en) 2002-02-01 2005-05-26 Arie Wijnen Anti-copy protection for a video signal
GB2390247B (en) 2002-06-28 2006-04-12 Dwight Cavendish Systems Ltd An improved method and apparatus for providing an anti-copy video signal
GB2419220B (en) 2004-10-13 2009-06-03 Dwight Cavendish Systems Ltd Audio copy protection system
JP2007318279A (ja) * 2006-05-24 2007-12-06 Sony Corp 情報処理装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325079A (en) * 1980-06-09 1982-04-13 Little William D Secure video transmission system
JPS57162896A (en) * 1981-03-31 1982-10-06 Clarion Co Ltd Toll television system
US4663659A (en) * 1985-10-31 1987-05-05 Rca Corporation Video signal scrambling system employing full line reversal and double burst coding
US5130810A (en) * 1983-11-23 1992-07-14 Macrovision Corporation Method and apparatus for processing a video signal so as to prohibit the making of acceptable videotape recordings

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58123289A (ja) * 1982-01-18 1983-07-22 Shinano Kikaku:Kk 否複製映像録画済磁気テ−プの記録方法
US4631603A (en) * 1985-04-17 1986-12-23 Macrovision Method and apparatus for processing a video signal so as to prohibit the making of acceptable video tape recordings thereof
US4901349A (en) * 1987-12-31 1990-02-13 Communications Satellite Corporation Time dispersal encryption of TV signals
JP2810103B2 (ja) * 1989-04-28 1998-10-15 パイオニア株式会社 テレビジョン信号のスクランブル方法
AU658014B2 (en) * 1991-11-19 1995-03-30 Macrovision Corporation Method and apparatus for scrambling and descrambling of video signals with edge fill
US5583936A (en) * 1993-05-17 1996-12-10 Macrovision Corporation Video copy protection process enhancement to introduce horizontal and vertical picture distortions
NZ307777A (en) * 1995-05-09 2000-01-28 Macrovision Corp Defeating effects of color burst modifications to a video signal
KR100489145B1 (ko) * 1995-10-17 2005-09-14 매크로비젼 코포레이션 비디오신호로부터비디오복사방지신호들의영향들을디지탈적으로제거하기위한방법및장치
US6188832B1 (en) * 1997-05-07 2001-02-13 Microvision Corp Method and apparatus for modifications made to a video signal to inhibit the making of acceptable videotape recordings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325079A (en) * 1980-06-09 1982-04-13 Little William D Secure video transmission system
JPS57162896A (en) * 1981-03-31 1982-10-06 Clarion Co Ltd Toll television system
US5130810A (en) * 1983-11-23 1992-07-14 Macrovision Corporation Method and apparatus for processing a video signal so as to prohibit the making of acceptable videotape recordings
US4663659A (en) * 1985-10-31 1987-05-05 Rca Corporation Video signal scrambling system employing full line reversal and double burst coding

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 004 (E - 151) 8 January 1983 (1983-01-08) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002015557A3 (fr) * 2000-08-15 2002-07-04 Macrovision Corp Procede et appareil permettant d'ameliorer une distorsion chromatique dans un signal video de protection de copie
US7050698B1 (en) 2000-08-15 2006-05-23 Macrovision Corporation Method and apparatus for synthesizing or modifying a copy protection signal using a lowered signal level portion
US7734142B2 (en) 2000-08-15 2010-06-08 Rovi Solutions Corporation Apparatus for providing a modified analog video signal from an internet transmission of a video signal
EP1668900B1 (fr) * 2003-06-05 2013-09-18 DCS Copy Protection Limited Systemes d'interruption de traitement numerique

Also Published As

Publication number Publication date
US6459795B1 (en) 2002-10-01
AR018739A1 (es) 2001-12-12
TW411713B (en) 2000-11-11
BR9908254A (pt) 2000-10-31
AU2237699A (en) 1999-09-15

Similar Documents

Publication Publication Date Title
KR100489145B1 (ko) 비디오신호로부터비디오복사방지신호들의영향들을디지탈적으로제거하기위한방법및장치
EP0706740B2 (fr) Amelioration d'un procede de protection de copie video introduisant des distorsions d'image verticales et horizontales
US20070242930A1 (en) Method and apparatus for modifying a video signal or for providing a copy protection signal by adding selected negative going and positive going pulses
US6459795B1 (en) Method and apparatus for enhancing the scrambling of a TV signal via erroneous clamp signals
US8498519B2 (en) Copy protection method and apparatus
EP1110392B1 (fr) Procede et appareil servant pour synthetiser et rendre inoperants les signaux de protection antipiratage video
US6009172A (en) Method and apparatus for optimizing scrambling concealment of a video signal by modifying a specialized sync pulse
WO1999031884A1 (fr) Procede et appareil permettant d'ameliorer la superposition horizontale et verticale de signaux pour une meilleure dissimulation dans les televiseurs modernes
US6028941A (en) Method for the defeat of illegal descramblers sensitive to the edges of sync in scrambled video
US6424716B1 (en) Method and apparatus for improved horizontal and vertical overlay signals for greater concealment in modern TV sets
US6711261B1 (en) Enhancing concealment in the presence of fine mistuning for various TV scrambling techniques
EP1480455A1 (fr) Procédé et appareil pour synthétiser des signaux de protection contre la copie dans un signal vidéo.
TW425822B (en) Method and apparatus for generating a signal that defeats illegal cable decoders
AU720847B2 (en) Method and apparatus for detecting modified color burst signals to prevent the copying of a video program
WO1998042130A1 (fr) Procede et appareil pour ameliorer de façon adaptative un signal de television crypte
WO2000005893A9 (fr) Amelioration du masquage pour le maintien de differentes techniques de brouillage en presence d'un desaccordage de precision

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: KR

122 Ep: pct application non-entry in european phase
点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载